const host = 'https://www.xinexp.com/'

const formatTime = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + '-' + [hour, minute, second].map(formatNumber).join(':')
}

const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : '0' + n
}
/**
 * 将小程序的API封装成支持Promise的API
 * @params fn {Function} 小程序原始API，如wx.login
 */
const wxPromisify = fn => {
  return function (obj = {}) {
    return new Promise((resolve, reject) => {
      obj.success = function (res) {
        resolve(res)
      }

      obj.fail = function (res) {
        reject(res)
      }

      fn(obj)
    })
  }
}

if(new Date((isLogin().expiretime-1000) * 1000) < new Date()) {
  http({
    url: 'api/token/refresh'
  }).then((data) => {
    let userInfo = isLogin();
    userInfo.token = data.token
    userInfo.expiretime = data.expires_time
    wx.setStorage({
      key: 'userInfo',
      data: userInfo
    })
  }).catch((err) => {
    
  })
}

function http(options) {
  if (options.isLoading) {
    wx.showLoading({
      // title: '加载中',
    })
  }
  wx.showNavigationBarLoading();
  var userInfo = wx.getStorageSync('userInfo') || '';
  const promise = new Promise(function (resolve, reject) {
    wx.request({
      url: host + options.url,
      method: options.method || 'get',
      dataType: 'json',
      header: {
        'content-type': options.contentType || 'application/x-www-form-urlencoded',
        'token': userInfo.token
        // 'X-CSRFToken': getCookie('csrftoken')
      },
      data: options.data,
      success(res) {
        (options.isLoading) && wx.hideLoading();
        wx.hideNavigationBarLoading();
        // console.log(res)
        if (options.isPay) {
          resolve(res.data);
        } else {
          let response = res.data;
          if (response.code === 1) {
            resolve(response.data);
          } else {
            reject(response.msg)
          }
        }
        
      },
      fail(err) {
        (options.isLoading) && wx.hideLoading()
        reject('网络错误');
      }
    })
  })
  return promise
}
function postImg(options) {
  var userInfo = wx.getStorageSync('userInfo') || '';
  const promise = new Promise(function (resolve, reject) {
    wx.uploadFile({
      url: host + options.url,
      header: {
        'Content-Type': 'multipart/form-data',
        'token': userInfo.token
      },
      filePath: options.file,
      name: 'file',
      success(res) {
        resolve(res.data);
        // do something
      },
      fail(err) {
        reject('网络错误');
      }
    })
  })
  return promise
}
function isLogin() {
  let value = wx.getStorageSync('userInfo') || '';
  return value;
}

function IdentityCodeValid(code) {
  var city = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江 ", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏 ", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外 " };
  var tip = "";
  var pass = true;

  if (!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[12])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)) {
    tip = "身份证号格式错误";
    pass = false;
  }

  else if (!city[code.substr(0, 2)]) {
    tip = "地址编码错误";
    pass = false;
  }
  else {
    //18位身份证需要验证最后一位校验位
    if (code.length == 18) {
      code = code.split('');
      //∑(ai×Wi)(mod 11)
      //加权因子
      var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
      //校验位
      var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];
      var sum = 0;
      var ai = 0;
      var wi = 0;
      for (var i = 0; i < 17; i++) {
        ai = code[i];
        wi = factor[i];
        sum += ai * wi;
      }
      var last = parity[sum % 11];
      if (parity[sum % 11] != code[17]) {
        tip = "校验位错误";
        pass = false;
      }
    }
  }
  // if (!pass) alert(tip);
  return pass;
}

function getMoreData(type, offset, limit){
  return http({
    url: 'api/miniwechat/index/type',
    data: {
      type,
      offset,
      limit
    }
  })
}

module.exports = {
  host: host,
  http: http,
  formatTime: formatTime,
  wxPromisify: wxPromisify,
  isLogin: isLogin,
  postImg: postImg,
  IdentityCodeValid: IdentityCodeValid,
  getMoreData: getMoreData
}
